grafana-plugin-sdk-go

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v0.45.0 Latest Latest
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Published: Apr 14, 2020 License: Apache-2.0

README

Grafana Plugin SDK for Go

Develop Grafana backend plugins with this Go SDK.

Warning: This SDK is currently in alpha and will likely have major breaking changes during early development. Please do not consider this SDK published until this warning has been removed.

Usage

package main

import (
	"context"
	"log"
	"os"

	gf "github.com/grafana/grafana-plugin-sdk-go"
)

const pluginID = "myorg-custom-datasource"

type MyDataSource struct {
	logger *log.Logger
}

func (d *MyDataSource) Query(ctx context.Context, tr gf.TimeRange, ds gf.DataSourceInfo, queries []gf.Query) ([]gf.QueryResult, error) {
	return []gf.QueryResult{}, nil
}

func main() {
	logger := log.New(os.Stderr, "", 0)

	srv := gf.NewServer()

	srv.HandleDataSource(pluginID, &MyDataSource{
		logger: logger,
	})

	if err := srv.Serve(); err != nil {
		logger.Fatal(err)
	}
}

Developing

Generate Go code for Protobuf definitions
make protobuf
Changing generic_*.go files in the data package

Currently genny is used for generating some go code. If you make changes to generic template files then genny needs to be installed, and then go generate needs to be run from with the data directory. Changed generated files should be committed with the change in the template files.

Directories

Path Synopsis
grpcplugin
Package grpcplugin provides support for serving plugin over gRPC.
Package grpcplugin provides support for serving plugin over gRPC.
log
Package log provides a logging interface to send logs from plugins to Grafana server.
Package log provides a logging interface to send logs from plugins to Grafana server.
resource/httpadapter
Package httpadapter provides support for handling resource calls using an http.Handler.
Package httpadapter provides support for handling resource calls using an http.Handler.
Package data provides data structures that Grafana recognizes.
Package data provides data structures that Grafana recognizes.
sqlutil
Package sqlutil provides helpers for scanning database/sql responses into a data.Frame.
Package sqlutil provides helpers for scanning database/sql responses into a data.Frame.
genproto

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